Self-balancing skateboard



FIG. 1 is a top perspective view of a self-balancing skateboard, showing my new design;

FIG. 2 is an enlarged front elevational view of FIG. 1;

FIG. 3 is an enlarged rear elevational view of FIG. 1;

FIG. 4 is a left-side elevational view of FIG. 1, the right-side elevational view being a mirror image thereof;

FIG. 5 is a top plan view of FIG. 1; and,

FIG. 6 is a bottom plan view of FIG. 1.

The broken lines in FIGS. 4 and 6 are for the purpose of illustrating portions of the article that form no part of the claimed design. 

CLAIM I claim the ornamental design for a self-balancing skateboard, as shown and described. 